Knockdown culvert-pipe.



A. BRUCE.

KNOOKDOWN GULVERT PIPE. APPLICATION FILED MAR. a1, 1913.

1,065,429, Patented June 24, 1913.

. Fig.3 R4

WITNESSES INVEN foR I WWO). mu $\ex)v\ -m2, Qw awd 3%54 N ATTORNEY f f therein, which sections, when adjustedtothe county of Cass and State of North Dathe invention, such as will enable others to the'accompanying"drawings, and to the made up of sections and adapted to be held :together by means of lock slots.

with slots e'formed' in one edge thereof, each registering slots e and apertures 7, ad

UNITED STATES PATENT orricn ALEX BRUCE, oF raneo, NORTH DAKOTA.

KNocKnoWN convnn'r-rrrn.

Tofall whom itmay concern." I

Be it known that I, ALEX BRUCE, a citizen of the United States; residing .at Fargo, n

kota, have invented certain new and useful Improvements in Knockdown Culvert- Pipes; and I do hereby declare the followinq to be a full, clear, and exact description 0? skilled in the art/to which it appertains to make and use the same, reference being had letters and figures of reference marked thereon, which form apart of this specifica tion. j p I This invention relates to new and useful improvements in knock-down. culvert pipes The invention comprises a simple and etfi-. cient device of this nature having various details ofconstruction and combinations and arrangements of parts which will be hereinafter fully described, shown inthe accompanying drawings, and then specifically-def, fined in the appendedclaims; r

1 illustrate my inventionii /theacc onrpanying drawings, in which I Figure 1 iso. side elevation of a section of my improved culvert pipe, parts being brokenaway. Fig. 2 is an end View showingltwosections connected together. Fig. 3 is a detail view showing two sections disassembled and Fig. 4 is a detail sectional view on line A A" of Fig. 1. I

Reference now being had tothe details: of. the drawings by letter, a and b designate two semicylindrical, corrugated shell sec-, tions, the former of which a is provided of which slots has an inclined edge 6, while thesections b'have each a series of apertures gather, overlap each? other. Bolts al have" threaded shank portions passing through h'e nuts care fitted to the ends of said'boltsi As the edges having the slotsare pushed 3 down over the bolts; theinclined edges of.

Specification of Letters Patent.

theslots coming in contact with the bolts will cause the sections 6 to spring slightly (topic: at this patent'mair be obtained for PatentedJune24,1913t longitudinally until the at has p assed the, inclined edge of the slot, after which the re}.

siliency of the-section b" will cause the' bolt toen age the angled or o'fiset end of'theslot,

gether. After the sect-ions have been joined together, the nuts may be. tightened upon. the outer ends-of the bolts, and thus the secltions be securely held together.

By the provision of a culvert p' I; 60. lpe madel i accordance with my invention, it will noted that the sections may be easily taken apart and nested together when desired'for,

I 1. knock down .culvert pipe made up off Seem-(mg: the edges of Which are adapted to: ove ap each other, one sectionbein pm;

videdwith apertures, bolts mounted therein, I

the overlapping section having angular slots -.'or1;the reception of said holes, as set forth.

2. A knock-down culvert pipe made up of sections, the edges of which areadaptedto overlap each other, one section being p'rovided'with apertures,-bolts mounted therein,

the other section having its op osite edges 5 provided with slots, the inner en s of which have offsets for the reception of said bolts,"

and nuts fitted to the bolts, as set forth.

3. it knockdown culvert pipe made up of sections, the edges of which are adapted to overlapeach other, one section being pro videcl with apertures, bolts mounted therein, the other section having its opposite edges provided with slots each having an oifset at its innerend, one ed e of each slot being at an inclination to'th' other 'edge of the slot, thereby causing the *ection to yield slightly.

astheone having theslots is forced down upon the bolts, the resiliency of the section causing'the latter to-niove so that the bolt will engage the ofis'et, land nuts fitted to the,

bolt, as set forthd lIntestimony whereof I hereunto aflixmy signature in presencel of two witnesses. 5

v ALEX BRUCE.

Witnesses:

Enrrn Pn'rnnson,

G. Kmrnu'.

5 1 there y securely holding the sections to-i 

